HEC-EFM

Hydrologic Engineering Center - Ecosystem Functions Model

The Hydrologic Engineering Center's Ecosystem Functions Model (HEC-EFM) is an ecosystem model that captures an ecosystem's response to changes in flow for a number of flow regimes and ecosystem relationships. HEC-EFM uses statistical analyses of hydrological and ecological systems, hydraulic modeling and geographic information systems (GIS) to represent how ecosystems respond to changes in the flow regime of a river or connected wetland. HEC-EFM also allows users to visualize and define ecological conditions, identify sites for restoration and examine and priortize restoration options or interventions.

Developer
USACE
Model Information
For more information about this model, go to www.hec.usace.army.mil
Spatial Resolution
The model spatial scale is defined based on the specified spatial scale for the defined flow regime profile.
Temporal Resolution
Time step is based on statistical time series flow curves, such as probability of exceedance, flow frequency and flow duration for specific streams. Results are compiled to report seasonal trends.
Outputs
Outputs include physical system parameters.
Intended User
practitioner
Model Type
ecosystem
Inclusion of Climate Change
Climate parameters and conditions can be accounted for through use of model scenarios.
Geographic Region
generalized
Data Requirements
some data sets built in
Source Code Availability
open source
Dimensions
not applicable
Computational Burden
low
Scenario Modeling
scenarios by hand only
Coding Language
GUI
Operating System
windows
Mathematical Approach
statistical
Maintenance Plan
maintained
Date of Last Known Update
1-Mar-17
User Manual
go to documentation at s3.amazonaws.com